Method and apparatus for abstracting logical topology information of peer-to-peer network

A non-transitory computer readable medium encoded with instructions that, when executed by a processor, cause the processor to:

• obtain a set of Points of Presence (POPs) {P1, P2, . . . , Pn} in a P2P network by getting access to a management information base (MIB) storing configuration information of the POPs or by getting access to a database storing configuration information of the POPs, wherein the P2P network comprises a plurality of POPs and a plurality of peer clients, each of the POPs connecting one or more peer clients;
• transmit the set of POPs {P1, P2, . . . , Pn} to each POP in the P2P network;
• collect calculation results of a best path and weight value from the each POP in the P2P network, wherein each POP calculates the best path from itself to each of the other POPs in the set of POPs {P1, P2, . . . , Pn} and the weight value by using relevant algorithm of a routing protocol;
• obtain a set of abstract logical topology records of the P2P network, wherein each of the abstract logical topology records includes a source POP, a destination POP and a sum of weight values of all links on the best path between the source POP and the destination POP;
• and
• transmit the set of abstract logical topology records to a P2P application server, wherein the set of abstract logical topology records are used by the P2P application server to optimize a selection of a peer client.

An apparatus for providing logical topology information of a Peer-to-Peer (P2P) network, wherein the P2P network comprises a plurality of Points of Presence (POPs) and a plurality of peer clients, each of the POPs connecting one or more peer clients, the logical topology information is used by the P2P application server to optimize a selection of a peer client, the apparatus comprises a processor and a memory,

• wherein the memory is configured to store instructions that, when executed by the processor, cause the processor to:
• obtain a set of Points of Presence (POPs) {P1, P2, . . . , Pn} in the P2P network by getting access to a management information base (MIB) storing configuration information of the POPs or by getting access to a database storing configuration information of the POPs;
• transmit the set of POPs{P1, P2, . . . , Pn} to each POP in the P2P network;
• collect calculation results of a best path and weight value from the each POP in the P2P network, wherein each POP calculates the best path from itself to each of the other POPs in the set of POPs {P1, P2, . . . , Pn} and the weight value by using relevant algorithm of a routing protocol;
• obtain a set of abstract logical topology records of the P2P network, wherein each of the abstract logical topology records includes a source POP, a destination POP and a sum of weight values of all links on the best path between the source POP and the destination POP;
• and
• transmit the set of abstract logical topology records to a P2P application server, wherein the set of abstract logical topology records are used by the P2P application server to optimize a selection of a peer client.